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| REMOTE POWER PACK SERVICE MANUAL
MICROMATIC.COM | 866-327-4159
MAINTENANCE
1. Inspect the unit monthly to ensure that the glycol level is maintained to the full level.
2. If the level is low replace with a
Micro Matic Polar Flo
®
glycol solution:
• MMPP4302-R, MMPP4302-PKG-R, MMPP4303-PKG-R, MMPP4303-PKG-3-R.
Mix: 2 ½ parts water to 1 part glycol.
• MMPP4305-PKG-R, MMPP4305-PKG-3-R, MMPP4307-PKG-R, MMPP4307-PKG-3-R, MMPP4307-PKG-4-R,
Mix: 7 parts distilled water to 5 parts glycol.
3. If there is evidence of ice build up in the unit, allow the ice to melt and replace all the water/glycol solution with a
fresh solution mixed per above instructions.
4. The glycol/water solution should be changed approximately every 18 months. In regions of high humidity
considerations should be given to replacing the solution on an annual basis.
5. Check and clean the condenser fins every sixty (60) days.
6. Check that there is adequate air flow through the unit ensuring enough space all around and that there are no
obstructions in front of the air flow vents.
7. Check the condition and effectiveness of the trunk line insulation.
8. At regular intervals, to be determined by the owner, the unit should be checked for electrical safety.
When all refrigeration line connections have been made, the complete system should be leak checked.
EVACUATION AND START UP - A vacuum of 250 microns or less must be pulled to properly dehydrate
the system.
DO NOT USE THE SYSTEM COMPRESSOR AS A VACUUM PUMP.
DO NOT OPERATE THE COMPRESSOR WHILE THE SYSTEM IS IN A VACUUM.
Open all condensing unit service valves and relieve system pressure. Also, plug in the bath to energize
the liquid line solenoid valve and glycol motors. GLYCOL MUST BE CIRCULATING THROUGH THE
HEAT EXCHANGER IN THE BATH BEFORE THE REFRIGERATION SYSTEM IS ENERGIZED. Connect
the vacuum pump to the low and high side of the system. Pull a vacuum of at least 250 microns.
When 250 microns is reached, close the vacuum lines and charge the system with the proper refriger-
ant until the sight glass is full.
Close the low and high side service valves. Be sure that the fan cycle control and crankcase heat-
ers are operating properly. Check thermostat on bath and be sure that temperature is dropping in
the bath. When the bath temperature reaches the set point on the thermostat, the liquid line solenoid
should close, suction pressure should drop and low pressure control on condensing unit should cycle
the compressor off. If unit is operating properly, replace the cover on condensing unit.
